Fortinet FortiOS < 5.2 / 5.4.x < 5.4.6 / 5.6.x < 5.6.1 SSL / TLS Renegotiation Handshakes MitM Plaintext Data Injection (FG-IR-17-137)

high Nessus Plugin ID 104656

Synopsis

The remote host is affected by a MITM vulnerability.

Description

The version of Fortinet FortiOS running on the remote device is 5.2.x or prior, 5.4.x prior to 5.4.6, or 5.6.x prior to 5.6.1. It is, therefore, affected by a MITM vulnerability in SSL Deep-Inspection due to insecure TLS renegotiation.

Solution

Upgrade to Fortinet FortiOS version 5.4.6 / 5.6.1 or later.

See Also

https://fortiguard.com/psirt/FG-IR-17-137

Plugin Details

Severity: High

ID: 104656

File Name: fortios_FG-IR-17-137.nasl

Version: 1.7

Type: local

Family: Firewalls

Published: 11/17/2017

Updated: 4/29/2021

Risk Information

CVSS Score Source: CVE-2009-3555

VPR

Risk Factor: Low

Score: 3.3

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:P

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:fortinet:fortios

Required KB Items: Host/Fortigate/model, Host/Fortigate/version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/3/2017

Vulnerability Publication Date: 11/3/2017

Reference Information

CVE: CVE-2009-3555

BID: 36935

CWE: 310